Chicago Heights is a city and a south suburb of Chicago in Cook County, Illinois, United States. The population was 30,276 at the 2010 census. Over the years, portions of Chicago Heights has suffered from high levels of crime, poverty, and unemployment. In earlier years, Chicago Heights was nicknamed "The Crossroads of the Nation". Currently, it is nicknamed "The Heights".
Chicago Heights lies on the high land of the Tinley Moraine, with the higher and older Valparaiso Moraine lying just to the south of the city.
According to the 2010 census, Chicago Heights has a total area of 10.083 square miles (26.11 km2), of which 10.07 square miles (26.08 km2) (or 99.87%) is land and 0.013 square miles (0.03 km2) (or 0.13%) is water.
The city's major crossroads are at Dixie Highway (Illinois Route 1) and Lincoln Highway (U.S. Route 30).
Chicago Heights is about 30 miles (48 km) south of the Chicago Loop.
As of the census of 2010, there were 30,276 people, 9,587 households, and 7,077 families in the city. The population density was 3,003.6 people per square mile (1,160.0/km²). There were 11,060 housing units at an average density of 1,097.2 per square mile (423.8/km²). The racial makeup was 38.0% White, 41.5% African American, 0.6% Native American, 0.4% Asian, 0.03% Pacific Islander, 16.6% some other race, and 2.9% from two or more races.